342,254 views
31 votes
31 votes
Solve for r and s. 2r + 6s =6 and 6r +2s =2 what kid of line are they

User SandroRiz
by
2.3k points

1 Answer

6 votes
6 votes
Answer:

r = 0, s = 1

The lines are neither parallel nor perpendicular

Step-by-step explanation:

The given equations are:

2r + 6s = 6........(1)

6r + 2s = 2........(2)

Multiply equation (1) by 3

6r + 18s = 18........(3)

Subtract equation (2) from equation (3)

16s = 16

s = 16/16

s = 1

Substitute s = 1 into equation (2)

6r + 2(1) = 2

6r + 2 = 2

6r = 2 - 2

6r = 0

r = 0/6

r = 0

Make r the subject of the formula in equation (1)

2r = -6s + 6

r = -3s + 6

The slope of the line represented by equation (1) = -3

Make r the subject of the formula in equation (2)

6r = -2s + 2

r = (-2/6)s + (2/6)

r = (-1/3)s + 1/3

The slope of the line represented by equation (2) = -1/3

As seen above, the slope are not equal and are not negative inverses of each other. therefore, the lines are neither parallel nor perpendicular

User Jeremy McNees
by
3.5k points